Where can you get a replacement canopy arm for your deluxe patio swing purchased at Costco about two years ago?

Try searching the internet for the brand name and model number. You could also try contacting Costco and see if they can help you.

Better yet, contact swingcushioncovers.com. They make the replacement canopies and cushion covers for all makes of outdoor patio swings using Sunbrella fabric, so it won't fall apart after a few years. They specialize in the Costco patio swing.